1) Arid refuges 2) Arid-area refuges 3) Camel refueling spots 4) Camel-filling stations 5) Caravan destinations 6) Caravan layover sites 7) Caravan layover spots 8) Caravan layovers 9) Caravan pit stops 10) Caravan refuges 11) Caravan rest stops 12) Caravan stopovers 13) Caravan stopping points 14) Caravan stops 1) Wadis 
• (pl. ) of Oasis
Percival Lowell's 1909 map of Mars showing canals as thin lines and 'oases' as round blobs at the major intersections of canals A term introduced by Percival Lowell in 1895 to describe dark, round features on the surface of Mars which he claimed lay at the major intersections of a Martian canal n...